/**
 *
 * @desc   url参数转对象
 * @param  {String} url  default: window.location.href
 * @return {Object}
 */

export default function parseQueryString(url) {
  url = url == null ? window.location.href : url
  var search = url.substring(url.lastIndexOf('?') + 1)
  if (!search) {
    return {}
  }
  return JSON.parse(
    '{"' +
      decodeURIComponent(search)
        .replace(/"/g, '\\"')
        .replace(/&/g, '","')
        .replace(/=/g, '":"') +
      '"}'
  )
}
